# s1 = 'abc'
# for ch in s1:
#     print(ch)

# l1 = [10, 20, 30]
# for i in l1:
#     print(i)

# names = ('tom', 'jerry', 'jack', 'rose')
# for name in names:
#     print(name)

d1 = {'name': 'nb', 'age': 20}
for key in d1:
    print(key, d1[key])
